JBL Incorporated, Balboa Boulevard, P.O. Box , Northridge, California U.S.A.. Technical Manual. JBLH. SPECIFICATIONS. Subwoofer JBL H. General specifications: diameter 18 inches, maximum power W. Thiele-Small parameters: frequency of self resonance Fs=20 Hz. Max Pwr. wRMS. Magnet Wt. 86 oz. Foam Surround Net Weight 22 lbs. Box 12cf, 44x29x21″ Box 23cf, 49x30x30″, Cone Sq.”;sq.M. Eff/Max SPL 95/.
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Now all I need is a handy closet! Extra Tabs by vBulletin Hispano.
I use a pair of ASH cabinets each with a H driver in them. Originally Posted by quindecima. Highest Recommended Crossover Frequency: A bigger box will get you lower also.
As an indication of electromechanical conversion efficiency, the B1 factor shall be at least 21 newtons per ampere. After you are done, be careful that you don’t ruin your guts or make yourself permanently blind due to detached retinas. Additionally, the cone is coated with an exclusive damping formulation to ensure optimum mass and density.
Continuous program power is defined as 3 dB greater than continuous sine wave power and is a conservative expression of the transducer’s ability to handle typical speech and music program material.
The best box is no box infinite baffle.
The time now is It’s probably a good idea to use the B as a model. I haven’t yet heard Eminent Technologies fan type subwoofers, but they are very expensive and require an additional two add on rooms for cabinets. Last edited by Lee in Montreal; at The frame shall be of cast aluminum to resist deformation, and the magnetic assembly shall utilize a ferrite magnet and produce a symmetrical magnetic field at the voice coil gap.
Performance specifications of a typical production unit shall be as follows: Hello I will build a subwoofer with 1 x but for the moment I don’t know what volume to use. On-axis response, measured at a distance of 2 m 6. The SFG design, in combination with a Flux Stabilizing Ring around the pole piece, significantly reduces second harmonic distortion and provides exceptionally accurate low frequency reproduction. Originally Posted by Vottboy.
Page 1 of 2 1 2 Last Jump to page: Adjust your pampers accordingly. The half-space reference efficiency shall be 2. Other loudspeakers will be considered for equivalency provided that submitted data from a recognized independent test laboratory verify that the above performance specifications are met. Measured sensitivity SPL at 1 m 3. When you get the cabinets, remove the stock boat anchor drivers and sell them on Ebay I am not joking, infrasound in large quantities can hurt you.
Subwooffer with JBL H
Components – H. You should also glue every seam by reaching inside with an extension arm and turning the cabinets so the glue flows properly into the joints. He built 2 more later on and has 4 in jbk stack – but I can’t find a picture of his final config right now. The voice coil shall be mm 4 in in diameter and shall be made of edgewound copper ribbon operating in a magnetic field of not less than 1.
Subwoofer JBL H specifications.
JBL continually engages in research related to product improvement. Originally Posted by JeffW. Your can also get an answer there. I think the Adcom stacks are to keep the subs from moving out. The sensitivity rating of JBL low frequency loudspeakers is based on a signal swept from Hz to Hz. The JBL Model H is a professional quality low frequency transducer designed for use in custom studio monitors or other applications requiring high sensitivity and power capacity, as well as extremely low distortion and extended bass response.
JBL 2245H 18 Inch Woofer Factory Reconed
Originally Posted by hjames. Rated power capacity shall be at least W normal program material. Usable frequency response shall extend from 20 Hz to 2 kHz.
At the bottom of the page, you can see a strip that says “similar threads”. Voice Coil Winding Depth: I have enought wood to biuld a box of L inside. New materials, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. When you get the cabinets, remove the stock boat anchor drivers and sell them on Ebay, tear out the wiring and replace with better stuff. Results 1 to 15 of Always fun learning more Volume Displaced by Driver when Mounted in Enclosure: In addition, a Flux Stabilizing Ring encircling the pole piece shall act to reduce flux modulation.
Maximum Excursion Before Damage: